TY - CONF A1 - Buchholz, Uwe A1 - Mc Hugh, Jarlath T1 - Material Characterisation of Cross-linked Polyethylene (XLPE) and Liquid Silicone Rubber (LSR) by means of Ultrasonic Spectroscopy N2 - For prediction of wave propagation in multilayered structures it is necessary to know the material properties. Important parameters are sound velocity (c) and attenuation ( ). Values found in the literature were not satisfactory mainly due to insufficient accuracy of measured attenuation. Experiments were carried out in Division VI.3 - Durability of Polymers. The ultrasonic test equipment was provided by Divisions VIII.1 - Measurement and Testing Technology; Sensors and VIII.4 - Acoustical and Electromagnetical Methods. T2 - ETG-Kongress 2009, Fachtagung 4: Diagnostik CY - Düsseldorf, Germany DA - 27.10.2009 PY - 2009 AN - OPUS4-20479 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Buchholz, Uwe A1 - Petersson, Björn A.T. T1 - Investigation of the Sound Transmission of a Partial Discharge through a Solid Dielectric Multilayered Device T2 - NAG/DAGA 2009, International Conference on Acoustics CY - Rotterdam, Netherlands DA - 2009-03-23 PY - 2009 AN - OPUS4-19322 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Buchholz, Uwe A1 - Petersson, B.A.T. ED - Marinus M. Boone, T1 - Investigation of the sound transmission of a partial discharge through a solid dielectric multilayered device N2 - Acoustic emission (AE) sources caused by partial discharges in solid dielectric devices like transition joints or outdoor terminations are investigated. Together with a prepared high voltage cable end this device forms a multilayer structure. The hypothesis is that due to the high damping of polymeric insulation materials no AE signal can be detected on the surface of the prescribed structures. An analytical technique is used to determine the transmission for a typical multilayer insulation. For quantitative computations it is necessary to know the material properties such as complex Young´s modulus, density and the Poisson´s ratio. Since the properties found in the literature were not fully satisfactory, measurements had to be done. The experimental setup and the results are shortly presented. Finally it will be shown that the transmission path plays not the significant role as was assumed in the beginning. T2 - International Conference on Acoustics - NAG/DAGA 2009 CY - Rotterdam, The Netherlands DA - 2009-03-23 PY - 2009 SN - 978-3-9808659-6-8 SP - 844 EP - 846 AN - OPUS4-19519 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Buchholz, Uwe A1 - Mc Hugh, Jarlath T1 - Material characterisation of cross-linked polyethylene (XLPE) and liquid silicone rubber (LSR) by means of ultrasonic spectroscopy T2 - Internationaler ETG-Kongress 2009 CY - Düsseldorf, Germany DA - 2009-10-27 KW - Ultrasonic spectroscopy KW - Partial discharge KW - Material characterisation KW - Solid dielectric KW - Mechanical properties KW - DMA PY - 2009 SN - 978-3-8007-3195-4 SN - 0341-3934 IS - Paper 4.17 SP - 271 EP - 272 PB - VDE-Verl. CY - Berlin AN - OPUS4-20265 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -